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Free online temperature converter for quick unit conversions. Convert between Celsius, Fahrenheit, and Kelvin with instant real-time results.
Cool
20°C = 68°F = 293.15K = 527.67°R = 120°De = 6.6°N = 16°Ré = 18°Rø
Formulas: °F = °C×9/5+32 · K = °C+273.15 · °R = (°C+273.15)×9/5 · °De = (100-°C)×3/2 · °N = °C×33/100 · °Ré = °C×4/5 · °Rø = °C×21/40+7.5
Converts temperatures between Celsius, Fahrenheit, and Kelvin in real time. Type in any of the three input fields and the other two update instantly. Includes common temperature presets (absolute zero, freezing point, body temperature, boiling point), a visual thermometer bar, and temperature description labels.
Temperature conversion is one of the most frequent unit conversions, needed in cooking, science, weather reporting, and everyday life. Having all three scales linked together with instant updates makes conversion effortless and error-free.
Students studying science or math, cooks converting recipe temperatures, weather enthusiasts comparing forecast scales, healthcare workers converting body temperatures, and anyone working with international temperature data.
Click on any input field (Celsius, Fahrenheit, or Kelvin) to make it active
Type a temperature value — the other two fields update automatically
Use the preset buttons for common reference temperatures
Check the thermometer bar and description label for context on the temperature
Click "copy" next to any field to copy that value to your clipboard
Type 100 in Celsius -> Fahrenheit: 212.00, Kelvin: 373.15 (water boiling point)Type 32 in Fahrenheit -> Celsius: 0.00, Kelvin: 273.15 (water freezing point)Type 0 in Kelvin -> Celsius: -273.15, Fahrenheit: -459.67 (absolute zero)the tool uses the standard conversion formulas with no rounding until display.
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